| Express Securities Limited | Administrative & support | 2004 |
| Express Supply Ltd | Transport & logistics | 2013 |
| Expresshaul Logistics Ltd | Transport & logistics | 2025 |
| Exterior Lights UK Ltd. | Wholesale & retail | 2012 |
| Extra Kent Cash & Carry Ltd | Wholesale & retail | 2022 |
| EZ Scaffolding (South East) Limited | Construction | 2021 |
| Ezimaris Services Limited | Health & social care | 2017 |
| F & S Legal Services Limited | Professional & scientific | 2024 |
| F Lovell Pank Ltd | Other services | 2024 |
| F&E VEG Ltd | Wholesale & retail | 2020 |
| F. Ellison Services Limited | Other services | 2025 |
| F.K.A Carpentry & Construction Ltd | Manufacturing | 2024 |
| F.R. Bradford & Co. Limited | Wholesale & retail | 1988 |
| F.S.E.P Ltd | Construction | 2020 |
| F1 Sound Company Limited | Administrative & support | 2009 |
| F4A Camps Limited | Education | 2026 |
| F4A Clubs Limited | Arts & recreation | 2026 |
| Fabian Gray Limited | Professional & scientific | 2024 |
| Fabled Press Ltd | Manufacturing | 2025 |
| Fabrique.Ai Ltd | Information & communication | 2019 |
| Facades Fabrications and Supply Limited | Construction | 2017 |
| Facet Fire Safety Limited | Financial services | 2026 |
| Facet Technical & Resource Solutions Limited | Construction | 2016 |
| Facilities Management Experts Ltd | Real estate | 2016 |
| Facta NON Verba Limited | Professional & scientific | 2021 |
| Faddy Healthier Living (UK) Ltd | Transport & logistics | 2025 |
| Fael Limited | Information & communication | 2014 |
| Fair Rising Ltd | Wholesale & retail | 2023 |
| Fairtech Systems Ltd | Information & communication | 2005 |
| Fairways Accommodation Support Trust | Health & social care | 2013 |
| Faithdane Limited | Real estate | 2025 |
| Faithdean Holdings Limited | Financial services | 2019 |
| Faithdean Interiors Limited | Extraterritorial | 1989 |
| Faithdean PLC | Construction | 1978 |
| Faithdean Special Works Ltd | Construction | 2016 |
| Falcon Advisers Limited | Financial services | 2025 |
| Falcon Training Services Ltd | Education | 2025 |
| Falguni Ltd | Health & social care | 2013 |
| Families Against Conformity Ltd | Wholesale & retail | 2017 |
| Families Star Ltd | Wholesale & retail | 2021 |
| Famous Filmwear Limited | Extraterritorial | 2020 |
| Fancrowd Limited | Wholesale & retail | 2026 |
| Fanstand Limited | Wholesale & retail | 2026 |
| Fantastic Decoration Ltd | Construction | 2025 |
| Fantasya Ltd | Real estate | 2022 |
| Fanthosprit Consults Ltd | Professional & scientific | 2025 |
| Farasina Limited | Manufacturing | 2019 |
| Fargold Limited | Administrative & support | 1994 |
| Farkh Properties & Investment Limited | Real estate | 2024 |
| Farmboi Limited | Education | 2026 |
| Farmhouse Pizza Chatham Ltd | Hospitality | 2024 |
| Farmzs Services Limited | Health & social care | 2014 |
| Farooq Ahmad Bhat Limited | Wholesale & retail | 2025 |
| Farooq Majeed Consultancy Limited | Real estate | 2025 |
| Farriers Court Amenity Company Limited | Households | 1989 |
| Fasba Ltd | Transport & logistics | 2024 |
| Fascia Plastics Home Improvements Ltd | Construction | 2015 |
| Fashion Spotr Ltd | Information & communication | 2019 |
| Fast & Solution Ltd | Construction | 2024 |
| Fast Decor London Ltd | Construction | 2023 |
| Fausted Care Ltd | Health & social care | 2015 |
| Fawilent CIC | Construction | 2026 |
| FBC Warehouse Limited | Wholesale & retail | 2022 |
| Fclhub.Com Limited | Transport & logistics | 2025 |
| FDC72 Ltd | Transport & logistics | 2026 |
| FDL Utility Services Limited | Construction | 2026 |
| Feast Republic Events and Catering Ltd | Hospitality | 2026 |
| Features Construct Ltd | Construction | 2019 |
| Features Developing Ltd | Construction | 2019 |
| Feisi Ltd | Health & social care | 2017 |
| FEK Futures Limited | Administrative & support | 2016 |
| Felindor Cats Ltd | Agriculture & fishing | 2024 |
| Felix Resourcing Limited | Professional & scientific | 2017 |
| Felly Health & Wellness CIC | Education | 2025 |
| Felly Medical Aesthetics Limited | Health & social care | 2022 |
| Fencecraft Ltd | Administrative & support | 2020 |
| Fenix DN Ltd | Hospitality | 2018 |
| Fennel Financial Services Ltd | Financial services | 2023 |
| Feno Group Ltd | Manufacturing | 2026 |
| Fern O D Ltd | Construction | 2023 |
| Ferrell & Baker,Limited | Real estate | 1929 |
| FF Service Consultancy Ltd | Professional & scientific | 2014 |
| Ffprop Solutions Limited | Real estate | 2026 |
| Fftech Solutions Ltd | Information & communication | 2021 |
| Fibre Lasertech Limited | Wholesale & retail | 2019 |
| Fica Limited | Wholesale & retail | 2024 |
| Fidens Legal Limited | Professional & scientific | 2017 |
| Fiducia & Flow Ltd | Professional & scientific | 2026 |
| Filimon Victor 0989 Limited | Transport & logistics | 2014 |
| Film ARC Limited | Information & communication | 2026 |
| Filmer and Milner Limited | Construction | 2013 |
| Filmer Contracting Limited | Construction | 1989 |
| Finadv Limited | Financial services | 2019 |
| Find a Courier Limited | Transport & logistics | 2019 |
| Find an Expert Limited | Professional & scientific | 2016 |
| Find the Hidden Christmas Ltd | Arts & recreation | 2024 |
| Find the Hidden Ltd | Professional & scientific | 2024 |
| Fine & Dandy Property Ltd | Real estate | 2025 |
| Finefix Consulting Limited | Professional & scientific | 2020 |
| Finesse DRY Cleaners Ltd | Other services | 2023 |